CN220948153U

CN220948153U - Steering mechanism of AGV dolly

Info

Publication number: CN220948153U
Application number: CN202322652531.6U
Authority: CN
Inventors: 尹华一; 李国庆; 曹二众
Original assignee: Xiamen University of Technology
Current assignee: Xiamen University of Technology
Priority date: 2023-09-28
Filing date: 2023-09-28
Publication date: 2024-05-14
Anticipated expiration: 2033-09-28

Abstract

The utility model discloses a steering mechanism of an AGV, and relates to the technical field of steering structures. The structure of the steering device comprises a mounting seat and two steering wheels; the steering wheel is in running fit with the end part of the mounting seat through a bearing; a rectangular plate is fixed in the middle of the lower surface of the mounting seat; a double screw rod is rotatably arranged on the rectangular plate; a steering motor is arranged on the rectangular plate; the output shaft of the steering motor is provided with a first gear; the double screw rod is provided with a second gear which is meshed with the first gear for transmission; two driving sliding sleeves are arranged on the double screw rods; the driving sliding sleeve is linked with the steering wheel at the same side through a connecting rod; the driving sliding sleeve is connected with a guide post in a threaded manner; the guide post is in linear guide fit with the mounting seat. According to the utility model, the double screw rods are driven to rotate by the steering motor, the two driving sliding sleeves are driven to linearly move, the two steering wheels are indirectly driven to synchronously rotate in the same direction by the two connecting rods, the threaded connection driving force is large, the AGV trolley is flexible in steering under a high load state, and the AGV trolley is convenient to install and detach.

Description

Steering mechanism of AGV dolly

Technical Field

The utility model belongs to the technical field of steering structures, and particularly relates to a steering mechanism of an AGV.

Background

AGV dolly refers to and is equipped with automatic guiding device such as vision or laser, can freely travel along appointed guide route or system planning route, has safety and keeps away barrier, warning, self-protection and various transport vehicles that move the function, need not the driver, can independently travel, can artifical periodic charging or self off-line charging. In the prior art, the front wheels on two sides are connected through the drag hook, the drag hook is driven by the steering wheel to pull the two front wheels for control, the steering of the two front wheels is difficult to control to be consistent, the front wheels on two sides cannot swing synchronously in the same direction, and the steering operation smoothness is poor; the AGV trolley controls the overall steering of the trolley through front wheel steering, but walks in spaces such as a warehouse, and the front wheel steering makes the AGV trolley inconvenient to work; in addition, the wheels, the driving mechanism and the steering mechanism thereof have the problems that the installation and the disassembly are inconvenient, the faults occur, and the workers are required to spend a long time and manpower for the disassembly and the maintenance. In order to solve the technical problems, the application provides a steering mechanism of an AGV trolley.

Disclosure of utility model

The utility model aims to provide a steering mechanism of an AGV, which drives a double screw rod to rotate through a steering motor, drives two driving sliding sleeves to linearly move, indirectly drives two steering wheels to synchronously rotate in the same direction through two connecting rods, has large threaded connection driving force and is convenient to install and detach.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

The utility model relates to a steering mechanism of an AGV (automatic guided vehicle), which comprises a mounting seat and two steering wheels, wherein the mounting seat is provided with a steering shaft; the steering wheel is in running fit with the end part of the mounting seat through a bearing; a rectangular plate is fixed in the middle of the lower surface of the mounting seat; the rectangular plate is rotatably provided with a double screw rod; a steering motor is arranged on the rectangular plate; a first gear is arranged on an output shaft of the steering motor; the double screw rod is provided with a second gear which is meshed with the first gear for transmission; two driving sliding sleeves are arranged on the double screw rods; the driving sliding sleeve is linked with the steering wheel at the same side through a connecting rod; the driving sliding sleeve is connected with a guide post in a threaded manner; the guide post is in linear guide fit with the mounting seat.

As a preferable technical scheme of the utility model, the mounting seat comprises a rectangular long plate; the lower surfaces of the two ends of the rectangular long plate are respectively fixed with a sleeve for installing a bearing; two guide holes for guiding the guide posts are axially symmetrically formed in the rectangular long plate; two vertical plates are respectively fixed on the upper surfaces of two ends of the rectangular long plate; and the upper ends of the two pairs of vertical plates are respectively fixed with a rectangular flange plate.

As a preferable aspect of the present utility model, the steering wheel includes a disc; the upper end face of the disc is fixed with a short shaft which is connected and matched with the bearing; wheels are arranged on the lower surface of the disc through double lugs and pin shafts; the edge of the disc is connected with one end of the connecting rod through a first capped pin shaft.

As a preferable technical scheme of the utility model, the driving sliding sleeve comprises an internal thread sleeve; a pair of single lugs are axially symmetrically fixed on the outer wall of the internal thread sleeve; one of the single lugs is connected with the other end of the connecting rod through a second capped pin shaft; the guide post is in threaded connection with the other single lug.

As a preferable technical scheme of the utility model, the upper surface of the rectangular long plate is provided with the proximity switches at the two ends of the guide hole respectively, when the guide post approaches the end part of the guide hole, the proximity switches detect signals, the steering motor stops rotating, and the limit damage of the steering electrode is avoided.

The utility model has the following beneficial effects:

1. The steering motor drives the double screw rods to rotate, drives the two driving sliding sleeves to linearly move, indirectly drives the two steering wheels to synchronously rotate in the same direction through the two connecting rods, is large in threaded connection driving force and stable in steering, and ensures that the AGV trolley is flexible in steering under a high load state.

2. The parts of the steering mechanism are arranged on the mounting seat, the mounting seat is connected with the AGV trolley, and the whole steering mechanism is convenient to assemble and disassemble and convenient to maintain and replace.

Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the steering mechanism of the AGV of the present utility model.

Fig. 2 is a front view of the present utility model.

Fig. 3 is a bottom view of the present utility model.

Fig. 4 is a schematic structural view of the steering wheel.

Fig. 5 is a schematic structural view of a driving sliding sleeve.

In the drawings, the list of components represented by the various numbers is as follows:

the steering device comprises a mounting seat, a 2-rectangular plate, a 3-double screw rod, a 4-steering wheel, a 5-steering motor, a 6-first gear, a 7-second gear, an 8-driving sliding sleeve, a 9-connecting rod, a 10-guiding column, an 11-rectangular long plate, a 12-sleeve, a 13-guiding hole, a 14-vertical plate, a 15-rectangular flange plate, a 41-disc, a 42-short shaft, a 43-double lug, a 44-wheel, a 45-first capped pin, a 81-internally threaded sleeve, a 82-single lug and a 83-second capped pin.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

First embodiment:

Referring to fig. 1-5, the utility model is a steering mechanism of an AGV trolley, which comprises a mounting seat 1 and two steering wheels 4. The steering wheel 4 is in running fit with the end of the mounting seat 1 through a bearing. A rectangular plate 2 is fixed in the middle of the lower surface of the mounting seat 1. A double screw rod 3 is rotatably arranged on the rectangular plate 2. A steering motor 5 is mounted on the rectangular plate 2. A first gear 6 is mounted on the output shaft of the steering motor 5. The double screw rod 3 is provided with a second gear 7 which is meshed with the first gear 6 for transmission. Two driving sliding sleeves 8 are arranged on the double screw rods 3. The driving sliding sleeve 8 is linked with the same-side steering wheel 4 through a connecting rod 9. The driving sliding sleeve 8 is connected with a guide post 10 in a threaded manner. The guide post 10 is in linear guide fit with the mounting seat 1. The steering mechanism for the AGV trolley can be arranged at the front end of the AGV trolley and also can be arranged at the rear end of the AGV trolley, and after the front end and the rear end of the AGV trolley are respectively provided with the steering mechanism, the AGV trolley moves in the front-rear direction and turns flexibly. The steering motor 5 drives the double screw rod 3 to rotate, drives the two driving sliding sleeves 8 to linearly move, indirectly drives the two steering wheels 4 to synchronously rotate in the same direction through the two connecting rods 9, has large threaded connection driving force and stable driving, and ensures that the AGV trolley is flexibly steered under a high load state.

The particular mount 1 comprises a rectangular long plate 11. The lower surfaces of the two ends of the rectangular long plate 11 are respectively fixed with a sleeve 12 for installing a bearing. Two guide holes 13 for guiding the guide posts 10 are axially symmetrically formed in the rectangular long plate 11. Two vertical plates 14 are respectively fixed on the upper surfaces of two ends of the rectangular long plate 11. The upper ends of the two pairs of plates 14 are respectively fixed with a rectangular flange plate 15, and the rectangular flange plates 15 are connected with the front end or the rear end of the AGV through bolts. The steering wheel 4 comprises a disc 41. The upper end face of the disc 41 is fixed with a short shaft 42 which is connected and matched with the bearing. The lower surface of the disc 41 is provided with wheels 44 by means of double lugs 43 and pins. The edge of the disc 41 is connected with one end of the connecting rod 9 through a first capped pin shaft 45. The drive sleeve 8 comprises an internally threaded sleeve 81. A pair of single lugs 82 are axially symmetrically fixed to the outer wall of the internally threaded sleeve 81. One of the single lugs 82 is connected to the other end of the connecting rod 9 by a second capped pin 83. The guide post 10 is threaded with another single lug 82.

In addition, the upper surface of the rectangular long plate 11 is provided with a proximity switch at two ends of the guide hole 13 respectively, when the guide post 10 approaches the end of the guide hole 13, the proximity switch detects a signal, the steering motor 5 stops rotating, and the limit damage of the steering electrode is avoided.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims

1. The utility model provides a steering mechanism of AGV dolly which characterized in that:

Comprises a mounting seat (1) and two steering wheels (4); the steering wheel (4) is in running fit with the end part of the mounting seat (1) through a bearing; a rectangular plate (2) is fixed in the middle of the lower surface of the mounting seat (1); a double screw rod (3) is rotatably arranged on the rectangular plate (2);

A steering motor (5) is arranged on the rectangular plate (2); a first gear (6) is arranged on an output shaft of the steering motor (5); the double screw rod (3) is provided with a second gear (7) which is meshed with the first gear (6) for transmission;

two driving sliding sleeves (8) are arranged on the double screw rods (3); the driving sliding sleeve (8) is linked with the steering wheel (4) at the same side through a connecting rod (9); a guide post (10) is connected to the driving sliding sleeve (8) in a threaded manner; the guide post (10) is in linear guide fit with the mounting seat (1).

2. Steering mechanism of an AGV trolley according to claim 1, characterized in that the mounting base (1) comprises a rectangular long plate (11); the lower surfaces of the two ends of the rectangular long plate (11) are respectively fixed with a sleeve (12) for installing a bearing; two guide holes (13) for guiding the guide posts (10) are axially symmetrically formed in the rectangular long plate (11); the upper surfaces of the two ends of the rectangular long plate (11) are respectively fixed with a pair of opposite plates (14); the upper ends of the two pairs of vertical plates (14) are respectively fixed with a rectangular flange plate (15).

3. Steering mechanism of an AGV trolley according to claim 2, characterized in that the steering wheel (4) comprises a disc (41); a short shaft (42) which is connected and matched with the bearing is fixed on the upper end surface of the disc (41); the lower surface of the disc (41) is provided with wheels (44) through double lugs (43) and a pin shaft; the edge of the disc (41) is connected with one end of the connecting rod (9) through a first capped pin shaft (45).

4. A steering mechanism of an AGV trolley according to claim 3, characterized in that the drive slide (8) comprises an internally threaded sleeve (81); a pair of single lugs (82) are axially symmetrically fixed on the outer wall of the internal thread sleeve (81); one of the single lugs (82) is connected with the other end of the connecting rod (9) through a second capped pin shaft (83); the guide post (10) is in threaded connection with the other single lug (82).

5. Steering mechanism of an AGV trolley according to claim 4, characterized in that the upper surface of the rectangular long plate (11) is provided with a proximity switch at each end of the guiding hole (13).